Line data Source code
1 : /*
2 : * Copyright (c) 1997 - 2002 Kungliga Tekniska Högskolan
3 : * (Royal Institute of Technology, Stockholm, Sweden).
4 : * All rights reserved.
5 : *
6 : * Redistribution and use in source and binary forms, with or without
7 : * modification, are permitted provided that the following conditions
8 : * are met:
9 : *
10 : * 1. Redistributions of source code must retain the above copyright
11 : * notice, this list of conditions and the following disclaimer.
12 : *
13 : * 2. Redistributions in binary form must reproduce the above copyright
14 : * notice, this list of conditions and the following disclaimer in the
15 : * documentation and/or other materials provided with the distribution.
16 : *
17 : * 3. Neither the name of the Institute nor the names of its contributors
18 : * may be used to endorse or promote products derived from this software
19 : * without specific prior written permission.
20 : *
21 : * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
22 : * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 : * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 : * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
25 : * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 : * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 : * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 : * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 : * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 : * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 : * SUCH DAMAGE.
32 : */
33 :
34 :
35 : #include <config.h>
36 :
37 : #include <stdio.h>
38 : #include <stdlib.h>
39 : #include <string.h>
40 : #include <roken.h>
41 : #include <heim_threads.h>
42 : #include "com_err.h"
43 :
44 : struct et_list *_et_list = NULL;
45 :
46 :
47 : KRB5_LIB_FUNCTION const char * KRB5_LIB_CALL
48 15573 : error_message (long code)
49 : {
50 0 : static char msg[128];
51 15573 : const char *p = com_right(_et_list, code);
52 15573 : if (p == NULL) {
53 9714 : if (code < 0)
54 0 : snprintf(msg, sizeof(msg), "Unknown error %ld", code);
55 : else
56 9714 : p = strerror(code);
57 : }
58 15573 : if (p != NULL && *p != '\0') {
59 15573 : strlcpy(msg, p, sizeof(msg));
60 : } else
61 0 : snprintf(msg, sizeof(msg), "Unknown error %ld", code);
62 15573 : return msg;
63 : }
64 :
65 : KRB5_LIB_FUNCTION int KRB5_LIB_CALL
66 579901 : init_error_table(const char *const *msgs, long base, int count)
67 : {
68 579901 : initialize_error_table_r(&_et_list, msgs, count, base);
69 579901 : return 0;
70 : }
71 :
72 : static void KRB5_CALLCONV
73 : default_proc (const char *whoami, long code, const char *fmt, va_list args)
74 : __attribute__ ((__format__ (__printf__, 3, 0)));
75 :
76 : static void KRB5_CALLCONV
77 0 : default_proc (const char *whoami, long code, const char *fmt, va_list args)
78 : {
79 0 : if (whoami)
80 0 : fprintf(stderr, "%s: ", whoami);
81 0 : if (code)
82 0 : fprintf(stderr, "%s ", error_message(code));
83 0 : if (fmt)
84 0 : vfprintf(stderr, fmt, args);
85 0 : fprintf(stderr, "\r\n"); /* ??? */
86 0 : }
87 :
88 : static errf com_err_hook = default_proc;
89 :
90 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
91 0 : com_err_va (const char *whoami,
92 : long code,
93 : const char *fmt,
94 : va_list args)
95 : {
96 0 : (*com_err_hook) (whoami, code, fmt, args);
97 0 : }
98 :
99 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
100 0 : com_err (const char *whoami,
101 : long code,
102 : const char *fmt,
103 : ...)
104 : {
105 0 : va_list ap;
106 0 : va_start(ap, fmt);
107 0 : com_err_va (whoami, code, fmt, ap);
108 0 : va_end(ap);
109 0 : }
110 :
111 : KRB5_LIB_FUNCTION errf KRB5_LIB_CALL
112 0 : set_com_err_hook (errf new)
113 : {
114 0 : errf old = com_err_hook;
115 :
116 0 : if (new)
117 0 : com_err_hook = new;
118 : else
119 0 : com_err_hook = default_proc;
120 :
121 0 : return old;
122 : }
123 :
124 : KRB5_LIB_FUNCTION errf KRB5_LIB_CALL
125 0 : reset_com_err_hook (void)
126 : {
127 0 : return set_com_err_hook(NULL);
128 : }
129 :
130 : #define ERRCODE_RANGE 8 /* # of bits to shift table number */
131 : #define BITS_PER_CHAR 6 /* # bits to shift per character in name */
132 :
133 : static const char char_set[] =
134 : "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_";
135 :
136 : static HEIMDAL_THREAD_LOCAL char buf[6];
137 :
138 : KRB5_LIB_FUNCTION const char * KRB5_LIB_CALL
139 0 : error_table_name(int num)
140 : {
141 0 : int ch;
142 0 : int i;
143 0 : char *p;
144 :
145 : /* num = aa aaa abb bbb bcc ccc cdd ddd d?? ??? ??? */
146 0 : p = buf;
147 0 : num >>= ERRCODE_RANGE;
148 : /* num = ?? ??? ??? aaa aaa bbb bbb ccc ccc ddd ddd */
149 0 : num &= 077777777;
150 : /* num = 00 000 000 aaa aaa bbb bbb ccc ccc ddd ddd */
151 0 : for (i = 4; i >= 0; i--) {
152 0 : ch = (num >> BITS_PER_CHAR * i) & ((1 << BITS_PER_CHAR) - 1);
153 0 : if (ch != 0)
154 0 : *p++ = char_set[ch-1];
155 : }
156 0 : *p = '\0';
157 0 : return(buf);
158 : }
159 :
160 : KRB5_LIB_FUNCTION void KRB5_LIB_CALL
161 0 : add_to_error_table(struct et_list *new_table)
162 : {
163 0 : struct et_list *et;
164 :
165 0 : for (et = _et_list; et; et = et->next) {
166 0 : if (et->table->base == new_table->table->base)
167 0 : return;
168 : }
169 :
170 0 : new_table->next = _et_list;
171 0 : _et_list = new_table;
172 : }
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